Oxygen Sensor: Description and Operation
Catalytic Converters, Oxygen Sensors and Attachments Assembly Overview
Oxygen sensors cylinder bank 1 location, refer to => [ Oxygen Sensors Cylinder Bank 1 Location ]
Oxygen sensors cylinder bank 2 location, refer to => [ Oxygen Sensors Cylinder Bank 2 Location ]
1 Main catalytic converter
• For cylinder bank 1, right side of vehicle.
• Protect from shocks and impact stress.
• Removing and installing, refer to => [ Right Main Catalytic Converter ] Right Main Catalytic Converter.
• Install exhaust system free of stress, refer to => [ Exhaust System, Installing ] Service and Repair.
2 Gasket
• Replace
3 23 Nm
• Replace
4 Primary catalytic converter
• For cylinder bank 1, right side of vehicle.
• With flex joint.
• Do not bend the de-coupling element more than 10 degrees or it could be damaged.
• Protect from shocks and impact stress.
• Removing and installing, refer to => [ Right Primary Catalytic Converter ] Right Primary Catalytic Converter.
• Install exhaust system free of stress, refer to => [ Exhaust System, Installing ] Service and Repair.
• Right side bracket, refer to => [ Primary Converter Bracket, Right Side ]
5 Gasket
• Replace
6 Exhaust manifold
• For cylinder bank 1 (right).
• Removing and installing, refer to => [ Right Exhaust Manifold ] Right Exhaust Manifold.
7 23 Nm
• Replace
8 Heated Oxygen Sensor (HO2S) (G39) (before catalytic converter)
• For cylinder bank 1 (right).
• Component location, refer to => [ Oxygen Sensors Cylinder Bank 1 Location ]
• Threads of new oxygen sensors are coated with assembly paste.
• When reusing oxygen sensor, coat threads with hot bolt paste; hot bolt paste.
• Assembly paste or hot bolt paste must not get onto slots of sensor body.
• Tighten to 55 Nm.
9 Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC) (G130)
• For cylinder bank 1 (right).
• Component location, refer to => [ Oxygen Sensors Cylinder Bank 1 Location ]
• Threads of new oxygen sensors are coated with assembly paste.
• When reusing oxygen sensor, coat threads with hot bolt paste; hot bolt paste.
• Assembly paste or hot bolt paste must not get onto slots of sensor body.
• Tighten to 55 Nm.
10 23 Nm
• Replace
11 Exhaust manifold
• Cylinder bank 2 (left).
• Removing and installing, refer to => [ Left Exhaust Manifold ] Left Exhaust Manifold.
12 Gasket
• Replace
13 Heated Oxygen Sensor (HO2S) 2 (G108) (in front of catalytic converter)
• For cylinder bank 2 (left).
• Component location, refer to => [ Oxygen Sensors Cylinder Bank 2 Location ]
• Threads of new oxygen sensors are coated with assembly paste.
• When reusing oxygen sensor, coat threads with hot bolt paste; hot bolt paste.
• Assembly paste or hot bolt paste must not get onto slots of sensor body.
• Tighten to 55 Nm.
14 Primary catalytic converter
• For cylinder bank 2, left side of vehicle.
• With flex joint
• Do not bend the de-coupling element more than 10 degrees or it could be damaged.
• Protect from shocks and impact stress.
• Removing and installing, refer to => [ Left Primary Catalytic Converter ] Left Primary Catalytic Converter.
• Install exhaust system free of stress, refer to => [ Exhaust System, Installing ] Service and Repair.
• Left side bracket, refer to => [ Primary Converter Bracket, Left Side ]
15 Oxygen Sensor (O2S) 2 behind Three Way Catalytic Converter (TWC) (G131)
• For cylinder bank 2 (left).
• Component location, refer to => [ Oxygen Sensors Cylinder Bank 2 Location ]
• Threads of new oxygen sensors are coated with assembly paste.
• when reusing oxygen sensor, coat threads with hot bolt paste; hot bolt paste.
• Assembly paste or hot bolt paste must not get onto slots of sensor body.
• Tighten to 55 Nm.
16 23 Nm
• Replace
17 Gasket
• Replace
18 Main catalytic converter
• For cylinder bank 2, left side of vehicle.
• Protect from shocks and impact stress.
• Removing and installing, refer to => [ Left Main Catalytic Converter ] Left Main Catalytic Converter.
• Install exhaust system free of stress, refer to => [ Exhaust System, Installing ] Service and Repair.
19 Suspended mount
• Replace if damaged.
20 23 Nm
21 Suspended mount
• Replace if damaged.
22 23 Nm
23 Suspended mount
• Replace if damaged.
24 23 Nm
25 Suspended mount
• Replace if damaged.
26 23 Nm
Oxygen Sensors Cylinder Bank 1 Location
- 1 - Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC) (G130)
- 2 - Heated Oxygen Sensor (HO2S) (G39)
Oxygen Sensors Cylinder Bank 2 Location
- 1 - Heated Oxygen Sensor (HO2S) 2 (G108)
- 2 - Oxygen Sensor (O2S) 2 behind Three Way Catalytic Converter (TWC) (G131)
Installed Position of Front Double Clamping Sleeves
- Install clamping sleeves so that bolts are on bottom.
• Ends of bolts point toward outside of vehicle.
Primary Converter Bracket, Left Side
1. Bracket
2. Bolts - 23 Nm
3. Bolt - 23 Nm
Primary Converter Bracket, Right Side
1. Bolt - 23 Nm
2. Bolt - 23 Nm
3. Bracket